package com.nowcoder.community.community.controller;

import com.nowcoder.community.community.entity.Comment;
import com.nowcoder.community.community.entity.DiscussPost;
import com.nowcoder.community.community.entity.Page;
import com.nowcoder.community.community.entity.User;
import com.nowcoder.community.community.service.CommentService;
import com.nowcoder.community.community.service.DiscussPostService;
import com.nowcoder.community.community.service.UserService;
import com.nowcoder.community.community.util.CommunityConstant;
import com.nowcoder.community.community.util.CommunityUtil;
import com.nowcoder.community.community.util.HostHolder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.*;

        @Controller
        @RequestMapping("/discuss")
        public class DiscussPostController implements CommunityConstant{
            @Autowired
            private DiscussPostService discussPostService;

            @Autowired
            private HostHolder hostHolder;

            @Autowired
            private UserService userService;

            @Autowired
            private CommentService commentService;

            @RequestMapping(path = "/add", method = RequestMethod.POST)
            @ResponseBody
            public String addDiscussPost(String title, String content){
                User user = hostHolder.getUser();
                if(user == null){
                    return CommunityUtil.getJSONString(403, "你还没有登陆！");
                }

                DiscussPost post = new DiscussPost();
                post.setUserId(user.getId());
                post.setTitle(title);
                post.setContent(content);
                post.setCreateTime(new Date());
                discussPostService.addDiscussPost(post);

                //报错的情况，将来统一处理
                return CommunityUtil.getJSONString(0,"发布成功！");
            }


            @RequestMapping(path = "/detail/{discussPostId}",method = RequestMethod.GET)
            public String getDiscussDetailPage(ModelMap model, @PathVariable("discussPostId") int discussPostId, Page page){
                DiscussPost post = discussPostService.getDiscussPost(discussPostId);
                User user = userService.findUserById(post.getUserId());
                model.addAttribute("post", post);
                model.addAttribute("user", user);

                //评论的分页信息
                page.setLimit(5);
                page.setPath("/discuss/detail/" + discussPostId);
                page.setRows(post.getCommentCount());

                //评论:给帖子的评论
                //回复：给评论的评论
                //评论列表
                List<Comment> comments = commentService.findCommentByEntity(
                        ENTITY_TYPE_POST, post.getId(), page.getOffset(), page.getLimit());

                List<Map<String, Object>> commentVoList = new ArrayList<>();
                if (!comments.isEmpty()) {
                    for (Comment comment : comments) {
                        //评论vo
                        Map<String, Object> commentVo = new HashMap<>();
                        commentVo.put("comment", comment);
                        commentVo.put("user", userService.findUserById(comment.getUserId()));

                        //回复评论列表
                        List<Comment> replyComments = commentService.findCommentByEntity(
                                ENTITY_TYPE_COMMENT, comment.getId(), 0, Integer.MAX_VALUE);
                        List<Map<String, Object>> replyVoList = new ArrayList<>();
                        if (!replyComments.isEmpty()) {
                            for (Comment reply : replyComments) {
                                Map<String, Object> replyVo = new HashMap<>();
                                //回复
                                replyVo.put("reply", reply);
                                replyVo.put("user", userService.findUserById(reply.getUserId()));
                                //回复的目标
                                User target = reply.getTargetId() == 0 ? null : userService.findUserById(reply.getTargetId());
                                replyVo.put("target", target);

                                replyVoList.add(replyVo);
                            }
                        }
                        commentVo.put("replys", replyVoList);

                        //回复数量
                        int replyCount = commentService.findCommentCount(ENTITY_TYPE_COMMENT, comment.getId());
                        commentVo.put("replyCount", replyCount);

                        commentVoList.add(commentVo);
                    }
                }

                model.addAttribute("comments", commentVoList);

                return "/site/discuss-detail";
    }
}
